diff --git a/pkgs/by-name/cc/ccusage/package.nix b/pkgs/by-name/cc/ccusage/package.nix
new file mode 100644
index 000000000000..4f2f8c24ef6c
--- /dev/null
+++ b/pkgs/by-name/cc/ccusage/package.nix
@@ -0,0 +1,107 @@
+{
+  lib,
+  stdenv,
+  rustPlatform,
+  fetchFromGitHub,
+  fetchurl,
+  pkg-config,
+  apple-sdk_15,
+  libiconv,
+  versionCheckHook,
+  nix-update-script,
+  runCommand,
+  jq,
+}:
+
+let
+  # ccusage embeds the LiteLLM model-pricing table at build time. Its build
+  # script otherwise downloads this file from the network, which fails in the
+  # sandbox. Upstream pins the data via a flake input and points
+  # CCUSAGE_PRICING_JSON_PATH at it; mirror that exact revision here so the
+  # build is offline and reproducible (see package.nix + flake.lock in the
+  # upstream repo at tag v20.0.6). Bump this revision together with the package
+  # version; nix-update only refreshes the src and cargo hashes.
+  litellmPricing = fetchurl {
+    url = "https://raw.githubusercontent.com/BerriAI/litellm/f27df8d516802ce4c1b32973992154fe83b851cf/model_prices_and_context_window.json";
+    hash = "sha256-zJa6H2EwP9s+hMVs78Y+hwo4UX1dHRtvX5J3MdGh5aI=";
+  };
+in
+rustPlatform.buildRustPackage (finalAttrs: {
+  pname = "ccusage";
+  version = "20.0.6";
+
+  src = fetchFromGitHub {
+    owner = "ryoppippi";
+    repo = "ccusage";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-uf/FlPprxx4jh74YwjmYMtoIHpTkKrWTLetbNoYiFv4=";
+  };
+
+  # The Cargo workspace lives in rust/, not at the repo root.
+  cargoRoot = "rust";
+  buildAndTestSubdir = "rust";
+
+  cargoHash = "sha256-izA2Gs5nPmt0zn6/e1xM80vyyQHYKGEUDpUFRpyFiB8=";
+
+  __structuredAttrs = true;
+  strictDeps = true;
+
+  nativeBuildInputs = [ pkg-config ];
+
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
+    apple-sdk_15
+    libiconv
+  ];
+
+  env.CCUSAGE_PRICING_JSON_PATH = "${litellmPricing}";
+
+  # Build only the ccusage binary out of the multi-crate workspace.
+  cargoBuildFlags = [
+    "-p"
+    "ccusage"
+    "--bin"
+    "ccusage"
+  ];
+
+  # Upstream disables the test suite in its own Nix build; parts of it rely on
+  # network access and live pricing data. versionCheckHook still exercises the
+  # built binary below.
+  doCheck = false;
+
+  nativeInstallCheckInputs = [ versionCheckHook ];
+  doInstallCheck = true;
+
+  passthru = {
+    updateScript = nix-update-script { };
+
+    tests = {
+      # With no agent data on disk, ccusage must still emit a valid, empty JSON
+      # report. --offline keeps it from reaching the network, exercising the
+      # pricing table baked in at build time. This guards the data discovery,
+      # JSON serialization, and offline-pricing paths without needing fixtures.
+      smoke =
+        runCommand "ccusage-smoke-test"
+          {
+            nativeBuildInputs = [
+              finalAttrs.finalPackage
+              jq
+            ];
+          }
+          ''
+            export HOME="$(mktemp -d)"
+            ccusage daily --json --offline > report.json
+            jq -e '.daily == [] and .totals.totalTokens == 0' report.json
+            touch "$out"
+          '';
+    };
+  };
+
+  meta = {
+    description = "Analyze coding agent CLI token usage and costs from local data";
+    homepage = "https://github.com/ryoppippi/ccusage";
+    changelog = "https://github.com/ryoppippi/ccusage/releases/tag/v${finalAttrs.version}";
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ thrix ];
+    mainProgram = "ccusage";
+  };
+})